Anti-wear Curve Internally Basalted | Cast Basalt Lined Elbow Bend - Sunny Steel Industrial Pipe Product

Anti-wear Curve Internally Basalted

Cast Basalt Lined Elbow Bend

Anti-wear curves with internal basalt lining combine steel strength with ultra-hard cast basalt for maximum wear protection in high-abrasion pipeline turning points.

What is Anti-wear Curve Internally Basalted?

Anti-wear curve internally basalted is a high-performance composite pipe fitting specially designed for the most severely worn turning positions in industrial conveying pipelines. It consists of a carbon steel or alloy steel outer bend and a high-density fused cast basalt lining installed on the inner wall.

Pipeline bends and curves are the parts most vulnerable to impact and abrasion in slurry, ash, ore powder and other conveying systems. Our internally basalted anti-wear curves use basalt with a hardness of HRC 80‑90 as the lining material, which can withstand long‑term high‑speed scouring and friction, making the service life of the bend 15‑20 times longer than that of ordinary steel bends.

These basalt lined curves are widely used in power plants, mines, metallurgy, cement, coal and chemical industries, effectively solving the problem of frequent replacement and maintenance of pipe bends in harsh working conditions.

Key Features of Internally Basalted Anti-wear Curves

Our internally basalted anti-wear curves have excellent comprehensive performance, which can fully meet the needs of high-abrasion and high-corrosion working conditions:

  • Ultra-high wear resistance: Cast basalt hardness exceeds HRC 80, far better than wear-resistant steel and alloy materials
  • Strong impact resistance: Can withstand long-term high-speed material impact without cracking or peeling
  • Excellent corrosion resistance: Resistant to acid, alkali, salt and various chemical corrosive media
  • Smooth inner surface: Low friction coefficient, no scaling, no material accumulation, high conveying efficiency
  • High structural strength: Steel outer shell bears pressure, safe and stable in operation
  • Wide temperature adaptability: Long-term stable operation at -50°C to 350°C
  • Simple installation: Same connection method as ordinary steel pipes, convenient for construction and maintenance

Cast Basalt Lining Material Properties

The internal lining of our anti-wear curves adopts high‑purity fused cast basalt, which is formed by high‑temperature melting and casting at 1500°C, with compact structure, no pores and stable performance.

Performance Item Parameter Value Testing Standard
Hardness (HRC) 80 - 90 Rockwell Hardness
Compressive Strength (MPa) ≥ 750 GB/T 4740
Bulk Density (g/cm³) ≥ 2.95 Archimedes Method
Wear Resistance 10‑15 times of Mn13 steel Wear Test
Working Temperature -50 ~ 350°C Actual Application

Manufacturing Process of Basalt Lined Curves

Our anti-wear curves internally basalted adopt precision casting and composite assembly processes to ensure perfect fit and firm combination of basalt lining and steel bend:

  1. Steel bend forming: Seamless or welded steel pipe bending, sandblasting and rust removal
  2. Basalt tile processing: Cast basalt cut into arc tiles matching the bend inner wall
  3. High-temperature adhesive coating: Uniformly apply special inorganic adhesive on the inner wall of the bend
  4. Basalt tile assembly: Paste and fix basalt tiles tightly, with even gaps and flat surface
  5. High-temperature curing: Heating and curing to ensure permanent bonding
  6. Port processing: Welding grooves, flanges and connectors according to standards
  7. Quality inspection: Conduct bonding strength, pressure and flatness testing

Standard Specifications of Anti-wear Curves

We provide complete specifications of internally basalted anti-wear curves, covering conventional pipe diameters and bending angles, and can customize special sizes according to customer needs.

Nominal Diameter (DN) Outer Diameter (mm) Basalt Thickness (mm) Bending Angle Bending Radius
DN50 – DN100 57 – 108 10 – 15 30°/45°/60°/90° R = 1D / 1.5D
DN125 – DN200 133 – 219 12 – 18 30°/45°/60°/90° R = 1.5D / 2D
DN250 – DN400 273 – 426 15 – 20 30°/45°/60°/90° R = 2D / 2.5D
DN450 – DN600 480 – 630 18 – 25 30°/45°/60°/90° R = 2.5D / 3D

Connection Methods for Basalt Lined Curves

Our internally basalted anti-wear curves support a variety of connection methods to adapt to different pipeline systems and installation environments:

  • Flange Connection: Standard carbon steel flanges, easy to disassemble and maintain, most widely used
  • Welding Connection: Direct welding with pipelines, good tightness, suitable for long-distance fixed pipelines
  • Grooved Connection: Fast installation, suitable for medium and low pressure slurry conveying systems
  • Special Connector: Customized connectors for special working conditions and equipment

All connection ports are protected by basalt lining to avoid wear at the joints and ensure the overall service life of the pipeline system.

Matching Wear-resistant Pipeline Systems

We provide a complete set of basalt lined pipeline systems to achieve full-lifecycle wear protection for the entire conveying line:

Product Type Specification Application Position
Straight Basalt Pipe DN50‑DN600 Straight pipeline section
Basalt Lined Bend 30°‑90° Pipeline turning section
Basalt Lined Tee Equal / Reducer Pipeline branching section
Basalt Lined Reducer Customized Pipeline diameter changing section

Main Application Industries

Anti-wear curves internally basalted are widely used in industrial fields with severe wear and corrosion, especially for pipeline turning parts with high-speed material impact:

  • Thermal power plants: Fly ash conveying, desulfurization slurry pipeline elbows
  • Mining industry: Ore slurry, concentrate, tailings pipeline turning bends
  • Metallurgical industry: Iron powder, slag, smelting waste conveying elbows
  • Cement industry: Raw meal, clinker, coal powder pipeline turning parts
  • Coal industry: Coal water slurry, gasification slag pipeline elbows
  • Chemical industry: Corrosive and abrasive medium pipeline turning sections

Performance Comparison with Traditional Pipe Bends

Compared with ordinary steel bends, alloy bends and cast stone bends, internally basalted anti-wear curves have obvious advantages in wear resistance, service life and cost performance:

Bend Type Wear Resistance Service Life Installation Cost Performance
Ordinary Steel Bend Poor 1‑3 months Easy Low
Wear-resistant Alloy Bend Medium 6‑12 months Medium Medium
Cast Stone Bend Good 2‑3 years Difficult Medium
Basalt Lined Bend Excellent 10+ years Easy High

Installation and Maintenance Guidelines

Installation and maintenance of internally basalted anti-wear curves are simple and convenient, and following standard operating procedures can further extend their service life:

During installation, avoid strong impact and knocking on the basalt lining to prevent cracking. The bending direction should be consistent with the material flow direction. Regularly check the flange connection tightness and pipeline operation status.

In daily use, avoid exceeding the rated temperature and pressure range. If local damage occurs, it can be repaired with special basalt repair glue, which is fast and low-cost.

Structural Design Advantages

Our anti-wear curves internally basalted adopt optimized structural design to improve wear resistance and stability:

The basalt lining adopts arc-shaped interlocking design, which fits closely with the steel bend and is not easy to fall off. The adhesive uses high-temperature inorganic materials with strong bonding force and good aging resistance. The inner wall is smooth with low resistance, which can reduce material impact and energy consumption.

For large diameter and high impact working conditions, we adopt composite fixation technology of pasting + inlaying to ensure the lining is firm and reliable.

Quality Control and Testing Standards

Each internally basalted anti-wear curve undergoes strict quality control and testing before leaving the factory, fully meeting national and industrial wear-resistant pipeline standards:

  • Raw material testing: Basalt hardness, density and steel pipe material inspection
  • Bonding strength test: Ensure firm combination of basalt and steel bend
  • Hydraulic pressure test: 1.5 times design pressure test, no leakage and deformation
  • Inner wall flatness inspection: Ensure smooth conveying and no material accumulation
  • Dimensional inspection: Strictly control tolerances to meet installation requirements

Customized Solutions

We provide personalized customization services for anti-wear curves internally basalted according to customer's working conditions, medium properties, conveying parameters and installation environment:

Our technical team can customize bending radius, angle, diameter, connection method and basalt thickness. Special-shaped bends, large-diameter bends and high-temperature resistant bends can be customized to meet the needs of complex working conditions.

We also provide on-site measurement, installation guidance and after-sales maintenance services to provide customers with a full set of wear-resistant pipeline solutions.

Packaging and Transportation

Our internally basalted anti-wear curves use professional shockproof and moisture-proof packaging to protect the basalt lining and pipe ports from damage during transportation.

Small and medium-sized bends are packed in wooden boxes with foam protection, and large-sized bends are bundled with steel belts and equipped with protective sleeves. We support sea, land and air transportation, and can arrange transportation modes according to customer's delivery location and time requirements.

Complete product certificates, testing reports and installation manuals are provided with the goods to facilitate customer acceptance and use.

Frequently Asked Questions
The service life of internally basalted anti-wear curves is 10-15 times that of ordinary steel bends and 3-5 times that of alloy bends. Under normal working conditions, the service life can reach more than 10 years.
Our basalt lined curves provide conventional angles of 30°, 45°, 60° and 90°, and can customize special angles such as 15°, 60° and 120° according to customer needs.
Our basalt lining adopts high-temperature inorganic adhesive bonding and interlocking structural design, with firm fixation. Under normal working conditions, there will be no falling off, and we provide a complete quality guarantee.
The conventional long-term working temperature of internally basalted anti-wear curves is -50°C to 350°C. High-temperature customized models can withstand up to 500°C, suitable for high-temperature conveying systems.
We can supply DN50 to DN600 diameter basalt lined curves. Conventional specifications are in stock, and large-diameter and special-sized curves can be customized according to customer drawings.
Yes, cast basalt has excellent corrosion resistance, resistant to acid, alkali and salt corrosion. It is very suitable for conveying mixed media with both abrasion and corrosion.
Basalt lined bends have better impact resistance and lower cost, suitable for large impact and medium wear conditions. Ceramic lined bends have higher wear resistance, suitable for ultra-high speed and strong wear conditions.
Installation is the same as ordinary steel pipe bends, avoid strong impact on the lining. Regularly check flange tightness. Local damage can be repaired with special basalt repair glue without replacing the whole bend.
Yes, we provide a complete set of basalt lined pipeline products including straight pipes, tees, reducers and flanges to form a complete wear-resistant pipeline system.
Conventional specification basalt lined curves have a delivery time of 7-15 days. Customized large-diameter and special-shaped curves have a delivery time of 20-30 days, ensuring on-time delivery.
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